The Collaborative International Dictionary of English v.0.48:

Parsimonious \Par`si*mo"ni*ous\, a. [Cf. F. parcimonieux. See
   Parsimony.]
   Exhibiting parsimony; sparing in expenditure of money; frugal
   to excess; penurious; niggardly; stingy. --
   Par`si*mo"ni*ous*ly, adv. -- Par`si*mo"ni*ous*ness, n.
   [1913 Webster]

         A prodigal king is nearer a tyrant than a parsimonious.
                                                  --Bacon.
   [1913 Webster]

         Extraordinary funds for one campaign may spare us the
         expense of many years; whereas a long, parsimonious war
         will drain us of more men and money.     --Addison.
   [1913 Webster]

   Syn: Covetous; niggardly; miserly; penurious; close; saving;
        mean; stingy; frugal. See Avaricious.
        [1913 Webster]

WordNet (r) 3.0 (2006):

parsimonious
    adj 1: excessively unwilling to spend; "parsimonious thrift
           relieved by few generous impulses"; "lived in a most
           penurious manner--denying himself every indulgence" [syn:
           parsimonious, penurious]

Moby Thesaurus II by Grady Ward, 1.0:

72 Moby Thesaurus words for "parsimonious":
   Lenten, Scotch, Spartan, abstemious, ascetic, austere, canny,
   careful, chary, cheeseparing, conserving, dwarfed, dwarfish,
   economic, economizing, exiguous, forehanded, frugal,
   frugal to excess, impoverished, jejune, labor-saving, lean,
   limited, meager, mean, miserly, money-saving, narrow, niggardly,
   overfrugal, paltry, penny-wise, penny-wise and pound-foolish, poor,
   provident, prudent, prudential, puny, saving, scamping, scant,
   scanty, scrawny, scrimp, scrimping, scrimpy, skimp, skimping,
   skimpy, slender, slight, slim, small, spare, sparing, starvation,
   stingy, stinted, stinting, straitened, stunted, subsistence, thin,
   thrifty, time-saving, too frugal, unnourishing, unnutritious,
   unwasteful, watered, watery